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Crossref Stats Page: Updated on Jun 13, 2021
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| MetaData Deposit |
| Total Records in Database | 125,980,925 |
| Total Prefixes | 20,652 |
| Number of Journals | 91,710 |
| Number of Books | 1,595,300 |
| Number of Conference Proceedings | 80,259 |
| Number of Journal DOIs | 89,667,908 |
| Number of Book DOIs | 19,917,050 |
| Number of Conference DOIs | 6,878,049 |
| Number of Components | 4,966,976 |
| Number of Standards Titles | 419,312 |
| Number of Standards DOIs | 329,991 |
| Number of Databases | 57,687 |
| Number of Database DOIs | 2,179,288 |
| Number of Articles with References Deposited | 51,778,057 |
| Number of Cited-By Links | 1,186,422,432 |
| Number of DOIs with at least one cited-by link (UNDER CONSTRUCTION) | 0 |
| Number of Journal Title Level DOIs | 42,701 |
| Number of Book Title Level DOIs | 1,615,395 |
| Number of ConfProc Title Level DOIs | 51,014 |
| Number of Dissertation Title Level DOIs | 382,348 |
| Number of Report Title Level DOIs | 679,732 |
| Number of Standards Title Level DOIs | 329,426 |
| Number of Database Title Level DOIs | 32,054 |
| Number of Unique DOIs with FundRef data | 2,947,660 |
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Monthly Deposit Data
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| Month | Total Records
Added | Total Current
Deposits | Total BackFile
Deposits | Total Records
Updated |
| (2018) | 9,874,117 | 7,617,991 | 2,256,126 | 39,854,067 |
| (2019) | 11,118,461 | 8,583,298 | 2,535,163 | 50,533,616 |
| (2020) | 12,462,544 | 9,986,005 | 2,476,539 | 45,287,268 |
| May | 887,638 | 776,319 | 111,319 | 3,292,255 |
| Jun | 927,909 | 803,147 | 124,762 | 3,299,087 |
| Jul | 1,047,460 | 834,077 | 213,383 | 3,126,547 |
| Aug | 873,497 | 757,483 | 116,014 | 3,594,187 |
| Sep | 1,103,079 | 886,336 | 216,743 | 4,817,711 |
| Oct | 997,236 | 855,383 | 141,853 | 4,543,142 |
| Nov | 1,062,042 | 886,381 | 175,661 | 3,539,017 |
| Dec | 1,371,421 | 859,514 | 511,907 | 4,895,536 |
| Jan | 1,044,509 | 813,429 | 231,080 | 4,375,380 |
| Feb | 969,590 | 813,687 | 155,903 | 4,338,423 |
| Mar | 1,283,413 | 944,477 | 338,936 | 5,327,406 |
| Apr | 1,055,832 | 807,704 | 248,128 | 6,289,466 |
| May | 1,041,893 | 837,705 | 204,188 | 4,464,162 |
| Jun | 580,691 | 382,091 | 198,600 | 2,335,212 |
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Monthly Query Data
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| Month | Total MetaData
Queries | Total Matches | % | % by group
( Lib Pub Aflt ) | Total DOI
Queries | Total Matches | % |
| (2018) | 2194087319 | 754,970,923 | 34% | 51% | 43% | 43% | 1,823,393,379 | 1,738,885,218 | 95% |
| (2019) | 1,656,796,256 | 783,711,585 | 47% | 53% | 51% | 51% | 1,848,492,261 | 1,716,370,974 | 93% |
| (2020) | 1,523,069,914 | 710,874,304 | 47% | 48% | 49% | 49% | 1,590,084,045 | 1,472,849,576 | 93% |
| May | 143,139,284 | 63,945,828 | 45% | 51% | 44% | 78% | 141,096,791 | 123,061,483 | 87% |
| Jun | 147,525,806 | 65,279,795 | 44% | 50% | 43% | 74% | 124,779,394 | 115,747,952 | 93% |
| Jul | 131,115,288 | 53,047,049 | 40% | 47% | 40% | 67% | 122,865,216 | 113,416,057 | 92% |
| Aug | 142,863,133 | 58,173,662 | 41% | 48% | 48% | 70% | 116,270,019 | 107,984,504 | 93% |
| Sep | 123,549,991 | 53,716,332 | 43% | 48% | 53% | 71% | 140,308,115 | 132,193,105 | 94% |
| Oct | 119,202,203 | 56,468,550 | 47% | 46% | 54% | 66% | 145,576,877 | 135,433,725 | 93% |
| Nov | 111,306,547 | 54,660,273 | 49% | 43% | 51% | 65% | 145,617,216 | 135,673,311 | 93% |
| Dec | 105,326,793 | 57,244,367 | 54% | 42% | 52% | 63% | 125,425,079 | 116,414,047 | 93% |
| Jan | 123,512,849 | 66,697,947 | 54% | 42% | 47% | 73% | 132,310,968 | 123,986,376 | 94% |
| Feb | 104,387,793 | 52,993,710 | 51% | 43% | 51% | 66% | 126,697,909 | 119,941,827 | 95% |
| Mar | 125,916,246 | 65,210,086 | 52% | 45% | 40% | 68% | 196,377,049 | 188,252,076 | 96% |
| Apr | 124,028,988 | 66,543,223 | 54% | 44% | 47% | 71% | 198,452,792 | 189,377,577 | 95% |
| May | 130,660,013 | 66,041,065 | 51% | 42% | 54% | 71% | 198,853,578 | 190,416,455 | 96% |
| Jun | 60,234,791 | 30,352,555 | 50% | 42% | 45% | 55% | 77,989,430 | 74,790,914 | 96% |
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Monthly ORCID Auto-Update Data
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| Month | Authors Granting
Permission | Works Added to
Authors Records |
| May | 58,376 | 197,824 |
| Jun | 47,687 | 199,486 |
| Jul | 40,043 | 197,785 |
| Aug | 57,368 | 211,201 |
| Sep | 51,720 | 217,345 |
| Oct | 45,021 | 213,521 |
| Nov | 50,277 | 212,989 |
| Dec | 49,444 | 219,210 |
| Jan | 54,164 | 231,651 |
| Feb | 53,053 | 230,211 |
| Mar | 60,012 | 280,862 |
| Apr | 54,755 | 242,060 |
| May | 60,069 | 255,426 |
| Jun | 32,903 | 121,243 |
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ORCID Totals
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| Statistic | Total |
| Total orcid/article pairs | 11,519,731 |
| Total unique orcids | 3,550,283 |
| Total works pushed | 6,515,131 |
| Authors granting | 1,773,673 |
| Authors denying | 661,259 |
| Authors not responding | 1,134,142 |
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